CN205248027U - Core of common mode choke coil and common mode choke coil - Google Patents
Core of common mode choke coil and common mode choke coil Download PDFInfo
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- CN205248027U CN205248027U CN201521052429.1U CN201521052429U CN205248027U CN 205248027 U CN205248027 U CN 205248027U CN 201521052429 U CN201521052429 U CN 201521052429U CN 205248027 U CN205248027 U CN 205248027U
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Abstract
Core of common mode choke coil and common mode choke coil. According to this disclosed various aspect, the example embodiment including the common mode choke coil of manganese zinc (MnZn) ferrite and nickel zinc (NiZn) ferrite is disclosed. In example embodiment, the core of common mode choke coil includes manganese -zinc ferrite subtotal nickel zinc ferrite part generally. First winding and secondary winding can be around the corresponding first portion and the second portion settings of core. First winding and secondary winding still extensible pass the opening of core. The distance piece can set up between first winding and secondary winding, in the opening of core. The base can couple and/or support first winding and secondary winding.
Description
Technical field
The disclosure relates generally to the core that comprises MnZn (MnZn) ferrite and the ferritic common mode choke of nickel zinc (NiZn) and common mode choke.
Background technology
This part provides the not necessarily background information relevant to the disclosure of prior art.
Choke coil generally in electronic circuit for stopping the signal frequency that exceedes required scope, allow DC or low frequency signal to pass through simultaneously. Therefore, adopt choke coil to prevent that electromagnetic interference (EMI) from disturbing various electronic installations.
Choke coil normally provides by magnetic core, passes or is provided with conductor or winding around magnetic core. Ferrite Material is generally used as the core material of many choke coils, because for example ferrite has responsive magnetic-frequency relation.
Utility model content
This part provides overall summary of the present disclosure, is not that its gamut or its institute are characteristic comprehensively open.
According to various aspects of the present disclosure, illustrative embodiments discloses and has comprised MnZn (MnZn) ferrite and the ferritic common mode choke of nickel zinc (NiZn). In the exemplary embodiment, the core of common mode choke comprises manganese-zinc ferrite part and nickel-zinc ferrite part generally. The first winding and the second winding can be around the corresponding Part I of core and Part II settings. The first winding and the second winding be the extensible opening through core also. Distance piece can be arranged between the first winding and the second winding, in the opening of core. Base can be connected to and/or support the first winding and the second winding.
Described manganese-zinc ferrite part can comprise having the manganese-zinc ferrite endless core that runs through the first opening wherein. Described nickel-zinc ferrite part can comprise having the nickel-zinc ferrite endless core that runs through the second opening wherein. Described the first opening and described second opening of corresponding described manganese-zinc ferrite endless core and described nickel-zinc ferrite endless core can be aligned with each other, to limit collaboratively the opening through described core. Described nickel-zinc ferrite endless core can be connected to described manganese-zinc ferrite endless core and/or be supported by described manganese-zinc ferrite endless core. Described manganese-zinc ferrite endless core can have the internal diameter and the external diameter that equate respectively with internal diameter and the external diameter of described nickel-zinc ferrite endless core.
Described the first winding and described the second winding can be respectively along the described Part I of described core and the outer surface of described Part II and inner surface settings. The described Part I of described core and described Part II and described the first winding and described the second winding can be separated along the opposition side of the described opening of described core. Described the first winding and described the second winding can relative to each other arrange symmetrically around the corresponding described Part I of described core and described Part II. The part of described the first winding and described the second winding is extensible through the opening in described base.
A kind of common mode choke, is characterized in that, this common mode choke comprises:
Core, described core comprises manganese-zinc ferrite part and nickel-zinc ferrite part, described core has the opening that runs through this core;
The first winding and the second winding, described the first winding and described the second winding are around corresponding Part I and the Part II setting of described core, and described the first winding and described the second winding extend through the described opening of described core;
Distance piece, described distance piece is arranged between described the first winding and described the second winding, in the described opening of described core;
Base, described base is connected to described the first winding and described the second winding and/or supports described the first winding and described the second winding.
A core for common mode choke, is characterized in that, this core comprises:
Manganese-zinc ferrite endless core, described manganese-zinc ferrite endless core has the first opening that runs through this manganese-zinc ferrite endless core;
Nickel-zinc ferrite endless core, described nickel-zinc ferrite endless core has the second opening that runs through this nickel-zinc ferrite endless core;
Wherein, described first opening of corresponding described manganese-zinc ferrite endless core and described second opening of described nickel-zinc ferrite endless core are aligned with each other, to limit collaboratively the opening through described core.
A kind of common mode choke, it is characterized in that, this common mode choke comprises: the core of aforementioned common mode choke, around the corresponding Part I of described core and Part II setting and extend through the first winding and second winding of the described opening of described core, and be arranged between described the first winding and described the second winding, distance piece in the described opening of described core.
According to the description providing herein, other can application will become clear. Description in the utility model content and concrete example are intended to just for purpose of illustration, but not are intended to limit the scope of the present disclosure.
Brief description of the drawings
Accompanying drawing described herein just for the selected embodiment of illustration but not the object of implementation likely, be not intended to limit the scope of the present disclosure.
Fig. 1 is according to the perspective view of the common mode choke of the ferritic core of nickel zinc (NiZn) of the MnZn that comprises 80 % by weight (MnZn) ferrite of illustrative embodiments and 20 % by weight;
Fig. 2 is the bottom view of the common mode choke shown in Fig. 1;
Fig. 3 is according to the perspective view of the common mode choke of the ferritic core of NiZn of the MnZn ferrite that comprises 50 % by weight of another illustrative embodiments and 50 % by weight;
Fig. 4 is according to the perspective view of the common mode choke of the ferritic core of NiZn of the MnZn ferrite that comprises 20 % by weight of another illustrative embodiments and 80 % by weight;
Fig. 5 A, 5B, 5C, 5D are for having (Z, R, X) impedance (unit: ohm) of the computer simulation of the common mode choke of the core of different magnetic conductivities and the exemplary line graph of the relation of frequency (unit: megahertz) according to the NiZn ferrite of the MnZn ferrite with 80 % by weight of the illustrative embodiments shown in Fig. 1 and 20 % by weight and for MnZn ferrite and NiZn ferrite;
Fig. 6 A, 6B, 6C, 6D are for according to the NiZn ferrite of the MnZn ferrite with 50 % by weight of the illustrative embodiments shown in Fig. 3 and 50 % by weight and have the exemplary line graph that comprises (Z, R, X) impedance (unit is all ohm) and the figure line of the relation curve of frequency (unit: megahertz) of the computer simulation of the common mode choke of the core of different magnetic conductivities for MnZn ferrite and NiZn ferrite, wherein, sample prototype;
Fig. 7 A, 7B, 7C, 7D are for having (Z, R, X) impedance (unit: ohm) of the computer simulation of the common mode choke of the core of different magnetic conductivities and the exemplary line graph of the relation of frequency (unit: megahertz) according to the NiZn ferrite of the MnZn ferrite with 20 % by weight of the illustrative embodiments shown in Fig. 4 and 80 % by weight and for MnZn ferrite and NiZn ferrite, wherein, sample prototype.
In multiple views of accompanying drawing, corresponding reference number is indicated corresponding parts all the time.
Detailed description of the invention
Now, example embodiment is described with reference to the accompanying drawings more fully.
The surface area that reduces circuit board can need higher assembly bulk density, can increase like this noise under upper frequency. In addition, the electromagnetic compatibility of some industrial equipments (EMC) requires to meet the standard associated with living environment and non-living environment. Traditional Wound-rotor type common mode choke has the impedance in very narrow interval (band) from 1MHz to 10MHz, and can not have high resistance levels. The utility model people recognizes in high density electric power application etc. the common mode choke need to from 1MHz to 10MHz with the high impedance scope (such as, the impedance of at least 600 ohm) in wide interval.
After recognizing above content, the utility model people develops and discloses at this illustrative embodiments that comprises MnZn (MnZn) ferrite and the ferritic common mode choke of nickel zinc (NiZn). MnZn ferrite can have high magnetic permeability (μ), for example, at the lower high impedance that produces of low frequency (, 1MHz etc.). NiZn ferrite can for example, provide high impedance under high frequency (, 10MHz etc.). Therefore the ferritic combination of MnZn ferrite and NiZn can make common mode choke can have the high impedance scope in the wide interval shown in Fig. 5 A-7D.
In the exemplary embodiment, common mode choke comprises MnZn (MnZn) ferrite ring-type core (broadly, manganese-zinc ferrite part) and nickel zinc (NiZn) ferrite ring-type core (broadly, nickel-zinc ferrite part). MnZn ferrite ring-type core or part can be 20% to 80% of gross weights based on two endless cores or ferrite part in weight. NiZn ferrite ring-type core can be 80% to 20% of gross weight based on two endless cores or ferrite part in weight. For example, the illustrative embodiments of common mode choke (for example, 100 in Fig. 1 etc.) comprises that gross weight based on core has the MnZn ferrite of 80 % by weight and has the ferritic core of NiZn of 20 % by weight. Another illustrative embodiments of common mode choke (for example, 200 in Fig. 3 etc.) comprises that the gross weight based on core has the MnZn ferrite of 50 % by weight and has the ferritic core of NiZn of 50 % by weight. Other illustrative embodiments of common mode choke (for example, 300 in Fig. 4 etc.) comprises that the gross weight based on core has the MnZn ferrite of 20 % by weight and has the ferritic core of NiZn of 80 % by weight.
MnZn ferrite can have relatively high magnetic conductivity (μ), under low frequency, produces high impedance. NiZn ferrite can have relatively low magnetic conductivity (μ), under upper frequency, provides high impedance. For instance, the ferritic magnetic conductivity of MnZn can require to change and for example, regulate in the scope of about 1000 to 15000 (, 2300,5000,7000,10000 etc.) according to practical impedance and inductance. In addition, for instance, the ferritic magnetic conductivity of NiZn also can require to change and for example, regulate in the scope of about 100 to 2000 (, 100,650,800,1500 etc.) according to practical impedance and inductance. In the exemplary embodiment, MnZn ferrite can have 4800 kilograms of every cubic metre of (kg/m3) density, NiZn ferrite can have 5100kg/m3Density.
Following table comprises and can be used in the exemplary embodiment MnZn (MnZn) ferrite and the ferritic examples material composition of nickel zinc (NiZn).
As shown above, the ferritic magnetic conductivity of MnZn ferrite and NiZn and material composition can change. For example, the NiZn ferrite that has a magnetic conductivity 100 can comprise iron oxide (the III) (Fe of 46-50 % by weight2O3), the zinc oxide (ZnO) of 12-16 % by weight, the nickel oxide (NiO) of 30-34 % by weight, the cupric oxide (CuO) of 4-8 % by weight. The NiZn ferrite with magnetic conductivity 650 can comprise iron oxide (the III) (Fe of 47-51 % by weight2O3), the zinc oxide (ZnO) of 28-31 % by weight, the nickel oxide (NiO) of 15-19 % by weight, the cupric oxide (CuO) of 2-6 % by weight. The NiZn ferrite with magnetic conductivity 800 can comprise iron oxide (the III) (Fe of 48-51 % by weight2O3), the zinc oxide (ZnO) of 27-31 % by weight, the nickel oxide (NiO) of 13-17 % by weight, the cupric oxide (CuO) of 4-8 % by weight. The NiZn ferrite with magnetic conductivity 1500 can comprise iron oxide (the III) (Fe of 48-51 % by weight2O3), the zinc oxide (ZnO) of 30-33 % by weight, the nickel oxide (NiO) of 11-14 % by weight, the cupric oxide (CuO) of 4-8 % by weight.
As above, shown in showing further, the MnZn ferrite with magnetic conductivity 2300 can comprise iron oxide (the III) (Fe of 50-53 % by weight2O3), the zinc oxide (ZnO) of 13.5-15 % by weight, the manganese oxide (II) of 32-35 % by weight is (MnO). The MnZn ferrite with magnetic conductivity 5000 can comprise iron oxide (the III) (Fe of 51-54 % by weight2O3), the zinc oxide (ZnO) of 18-22 % by weight, the manganese oxide (II) of 26-29 % by weight is (MnO). The MnZn ferrite with magnetic conductivity 7000 can comprise iron oxide (the III) (Fe of 50-54 % by weight2O3), the zinc oxide (ZnO) of 20-24 % by weight, the manganese oxide (II) of 24-27 % by weight is (MnO). The MnZn ferrite with magnetic conductivity 10000 can comprise iron oxide (the III) (Fe of 50-53 % by weight2O3), the zinc oxide (ZnO) of 20-24 % by weight, the manganese oxide (II) of 25-28 % by weight is (MnO).
Advantageously, the illustrative embodiments of common mode choke disclosed herein can provide the performance of the enhancing that is better than other traditional common mode choke. For example, the illustrative embodiments that comprises MnZn ferrite and the ferritic common mode choke of NiZn can provide one or more (but not necessarily any or all) in following characteristics than traditional common mode choke: such as, the high impedance in wider frequency band, higher frequency, high density application of power etc. In the exemplary embodiment, coil can be not packed, and the coil of encapsulation can not allow the current density can be up to 12 amperes of every square millimeter of (A/mm2)。
Now, with reference to accompanying drawing, Fig. 1 illustrates the illustrative embodiments of the common mode choke 100 of implementing one or more aspect of the present disclosure. As shown in fig. 1, common mode choke 100 comprises MnZn (MnZn) ferrite ring-type core or annular construction member 104 and nickel zinc (NiZn) ferrite ring-type core or annular construction member 108.
In this illustrative embodiments, about 80 percentage by weights of the gross combination weight of MnZn ferrite ring-type core 104 based on two endless cores 104,108. About 20 percentage by weights of the gross combination weight of NiZn ferrite ring-type core 108 based on two endless cores. In other words, common mode choke 100 comprises that weight is the MnZn ferrite of four times, NiZn ferrite. Alternate embodiments can have MnZn ferrite and the NiZn ferrite of Different Weight ratio.
In this illustrative embodiments, NiZn ferrite ring-type core 108 is stacked on top or the top of MnZn ferrite ring-type core 104. Therefore, MnZn ferrite ring-type core 104 can be called as lower endless core, and NiZn ferrite ring-type core 108 also can be called as endless core. Alternatively, other illustrative embodiments can be put upside down direction, make MnZn ferrite ring-type core the top of NiZn ferrite ring-type core or above.
MnZn ferrite ring-type core 104 and NiZn ferrite ring-type core 108 can be such as being attached to one another by adhesive etc. For example, can between MnZn ferrite ring-type core 104 and NiZn ferrite ring-type core 108, use epoxy resin and/or adhesive tape, for MnZn ferrite ring-type core 104 is attached to NiZn ferrite ring-type core 108. MnZn ferrite ring-type core 104 after combination and NiZn ferrite ring-type core 108 also can be collectively referred to as main body or the core (for example, cylinder-shaped body or core etc.) of common mode choke 100 in this article.
In this illustrative embodiments, MnZn ferrite ring-type core 104 and NiZn ferrite ring-type core 108 are circular, annular and ring-type generally. MnZn ferrite ring-type core 104 and NiZn ferrite ring-type core 108 (for example comprise respectively the first opening of running through wherein and the second opening, open wide or mid portion, the central opening etc. of hollow), the first opening and the second opening are aligned with each other, limit collaboratively the opening 112 (for example, passage etc.) that extends through MnZn ferrite ring-type core 104 after combination and NiZn ferrite ring-type core 108. Alternatively, other illustrative embodiments for example can be differently configured to, such as having difform MnZn ferrite core and NiZn ferrite core (, non-circular, rectangle, triangle, ellipse etc.) etc.
MnZn ferrite ring-type core 104 and NiZn ferrite ring-type core 108 can have equal internal diameter (for example, 15 millimeters etc.) and external diameter (for example, 25 millimeters etc.). In this example, the height of the comparable NiZn ferrite ring-type core 108 of the height of MnZn ferrite ring-type core 104 (for example, 8 millimeters etc.) (for example, 2 millimeters etc.) large (for example, be its 4 times large). Stacking MnZn ferrite ring-type core 104 and the combined altitudes of NiZn ferrite ring-type core 108 can be about 10 millimeters. Alternatively, other illustrative embodiments can by be differently configured to such as make in MnZn ferrite ring-type core 104 and NiZn ferrite ring-type core 108 any or the two there is greater or lesser size etc.
Continue with reference to Fig. 1, common mode choke 100 also comprises the first winding 116 and the second winding 120. MnZn ferrite core 104 after the first winding 116 and the second winding 120 windings close and corresponding Part I 118 and the Part II 122 of NiZn ferrite core 108 arrange or are wound around. The first winding 116 and the second winding 120 can be along MnZn ferrite core 104 and point other Part I 118 of NiZn ferrite core 108 and outer surface and the inner surface settings of Part II 122 after combination. The first winding 116 and the second winding 120 are extensible through opening 112. MnZn ferrite core 104 after combination and the Part I 118 of NiZn ferrite core 108 and Part II 122 can be separated along the opposition side of opening 112. Similarly, the first winding 116 and the second winding 120 can be separated along the opposition side of opening 112.
In this illustrative embodiments, for example, MnZn ferrite core 104 after (, winding eight is inferior) combination of the first winding 116 and the second winding 120 and corresponding Part I 118 and the relative to each other setting symmetrically of Part II 122 of NiZn ferrite core 108. For instance, the first winding 116 and the second winding 120 can comprise the conductor wire with dielectric coat or insulating coating. For example, the first winding 116 and the second winding 120 can comprise enamel covered wire. Alternatively, other embodiment can be differently configured to for example make other material of winding to make, and has than more than eight or few coil or circle, has different sizes etc.
Distance piece 124 is arranged on by the mid portion unlimited or hollow of the aligning of the MnZn ferrite core 104 after combination and NiZn ferrite core 108 and limits collaboratively and pass in the opening 112 of mid portion of the unlimited or hollow of aiming at. The corresponding opposite side that distance piece 124 is provided in MnZn ferrite core 104 and NiZn ferrite core 108 is extended between dividing, and makes the first winding 116 and the second winding 120 be positioned at the opposition side of distance piece 124. Distance piece 124 can be made up of the dielectric material such as such as FR4 composite, plastics, silicone. Distance piece 124 can be configured to operate for helping to maintain and guarantee the gap (clearance) between winding. Distance piece 124 can be such as for example, being connected to MnZn ferrite core 104 and NiZn ferrite core 108 by adhesive (, epoxy resin, adhesive tape etc.). Alternatively, distance piece 124 can be configured to (for example, by determined size, shaping etc.) and make distance piece 124 by the friction between distance piece 124 and MnZn ferrite core 104 and the side part of NiZn ferrite core 108 or interference fit and in position.
MnZn ferrite core 104 and distance piece 124 can be connected to base 128 and/or be supported by base 128. For example, the assembly that comprises MnZn ferrite core 104 and NiZn ferrite core 108, the first winding 116 and the second winding 120 and distance piece 124 can be arranged on base 128. The location of assembly on base 128 also can comprise the part 132,136 of corresponding the first winding 116 and the second winding 120 is navigated in the opening or hole in base 128. The part 132,136 of base 128 and the first winding 116 and the second winding 120 is also shown in Fig. 2.
The part 132,136 of corresponding the first winding 116 and the second winding 120 can be such as being connected to base 128 by adhesive etc. For example, can use epoxy resin by attached part 132,136 or be attached to base 128.
Fig. 3 illustrates another illustrative embodiments of the common mode choke 200 of implementing one or more aspect of the present disclosure. As shown in Figure 3, common mode choke 200 comprises MnZn (MnZn) ferrite ring-type core 204 and nickel zinc (NiZn) ferrite ring-type core 208. In this illustrative embodiments, MnZn ferrite ring-type core 204 and NiZn ferrite ring-type core 208 include about 50 percentage by weights of the gross combination weight based on two endless cores 204,208. In other words, common mode choke 200 comprises MnZn ferrite and the NiZn ferrite of weight equivalent.
Therefore, common mode choke 200 comprises MnZn ferrite and the NiZn ferrite that weight ratio is different from the weight ratio of the common mode choke 100 shown in Fig. 1. Except weight ratio difference, common mode choke 200 can comprise the feature similar or identical with the character pair of common mode choke 100. For example, common mode choke 200 comprises the first winding 216,220, distance piece 224 and base 228 that can be similar or identical with base 128 with the first winding 116,120, the distance piece 124 of common mode choke 100.
Fig. 4 illustrates another illustrative embodiments of the common mode choke 300 of implementing one or more aspect of the present disclosure. As shown in Figure 4, common mode choke 300 comprises MnZn (MnZn) ferrite ring-type core 304 and nickel zinc (NiZn) ferrite ring-type core 308. In this illustrative embodiments, MnZn ferrite ring-type core 304 comprises about 20 percentage by weights of the gross combination weight based on two endless cores 304,308. NiZn ferrite ring-type core 308 comprises about 80 percentage by weights of the gross combination weight based on two endless cores. In other words, common mode choke 100 comprises that weight is the NiZn ferrite of four times, MnZn ferrite.
Therefore, common mode choke 300 comprises MnZn ferrite and the NiZn ferrite that weight ratio is different from the weight ratio of the common mode choke 100 shown in Fig. 1. Except weight ratio difference, common mode choke 300 can comprise the feature similar or identical with the character pair of common mode choke 100. For example, common mode choke 300 comprises the first winding 316,320, distance piece 324 and base 328 that can be similar or identical with base 128 with the first winding 116,120, the distance piece 124 of common mode choke 100.
Fig. 5 A-7D comprises for the exemplary line graph with the relation of frequency (unit: megahertz) according to (Z, R, X) impedance of the computer simulation of the common mode choke of illustrative embodiments (unit: ohm). In order to carry out computer simulation, MnZn ferrite ring-type core and NiZn ferrite ring-type core have 25 millimeters of equal outer diameter, 15 millimeters of equal inside diameters and 10 millimeters of combination total heights.
More specifically, Fig. 5 A, 5B, 5C, 5D are for the exemplary line graph with the relation of frequency (unit: megahertz) according to (Z, R, X) impedance of the computer simulation of the common mode choke of the illustrative embodiments 100 shown in Fig. 1 (unit: ohm). In order to carry out computer simulation, MnZn (MnZn) ferrite ring-type core is based on 80% of endless core gross weight in weight. Nickel zinc (NiZn) ferrite ring-type core is based on 20% of two endless core gross weights in weight. Use different magnetic conductivities for MnZn ferrite: 2300 (Fig. 5 A), 5000 (Fig. 5 B), 7000 (Fig. 5 C), 10000 (Fig. 5 D), and use different magnetic conductivities for NiZn ferrite: 100,650,800.
As Fig. 5 A, 5B, 5C, 5D illustrate, comprise that the common mode choke with the MnZn ferrite of 80 % by weight and the ferritic core of NiZn of 20 % by weight has the high impedance scope in wide interval. For example, Fig. 5 D illustrates and comprises that magnetic conductivity is that 10000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 2200 ohm in 100,650 or 800 ferritic three examples of NiZn. Fig. 5 C illustrates and comprises that magnetic conductivity is that 7000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 1000 ohm in 100,650 and 800 ferritic three examples of NiZn. Fig. 5 B illustrates and comprises that magnetic conductivity is that 5000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 2400 ohm in 100,650 and 800 ferritic three examples of NiZn. Fig. 5 A illustrates and comprises that magnetic conductivity is that 2300 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 3400 ohm in 100,650 and 800 ferritic three examples of NiZn.
Fig. 6 A, 6B, 6C, 6D are for the exemplary line graph with the relation of frequency (unit: megahertz) according to (Z, R, X) impedance of the computer simulation of the common mode choke of the illustrative embodiments 200 shown in Fig. 3 (unit: ohm). In order to carry out computer simulation, MnZn (MnZn) ferrite ring-type core and nickel zinc (NiZn) ferrite ring-type core in weight all based on 50% of two endless core gross weights. Use different magnetic conductivities for MnZn ferrite: 2300,5000,7000,10000, and use different magnetic conductivities for NiZn ferrite: 100,650,800.
As Fig. 6 A, 6B, 6C, 6D illustrate, comprise that the common mode choke with the MnZn ferrite of 50 % by weight and the ferritic core of NiZn of 50 % by weight has the high impedance scope in wide interval. For example, Fig. 6 D illustrates and comprises that magnetic conductivity is that 10000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 1600 ohm in 100,650 or 800 ferritic three examples of NiZn. Fig. 6 C illustrates and comprises that magnetic conductivity is that 7000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 900 ohm in 100,650 and 800 ferritic three examples of NiZn. Fig. 6 B illustrates and comprises that magnetic conductivity is that 5000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 1500 ohm in 100,650 and 800 ferritic three examples of NiZn. Fig. 6 A illustrates and comprises that magnetic conductivity is that 2300 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 2200 ohm in 100,650 and 800 ferritic three examples of NiZn.
Fig. 7 A, 7B, 7C, 7D are for the exemplary line graph with the relation of frequency (unit: megahertz) according to (Z, R, X) impedance of the computer simulation of the common mode choke of the illustrative embodiments 300 shown in Fig. 4 (unit: ohm). In order to carry out computer simulation, MnZn (MnZn) ferrite ring-type core is based on 20% of endless core gross weight in weight. Nickel zinc (NiZn) ferrite ring-type core is based on 80% of two endless core gross weights in weight. Use different magnetic conductivities for MnZn ferrite: 2300,5000,7000,10000, and use different magnetic conductivities for NiZn ferrite: 100,650,800.
As Fig. 7 A, 7B, 7C, 7D illustrate, comprise that the common mode choke with the MnZn ferrite of 20 % by weight and the ferritic core of NiZn of 80 % by weight has the high impedance scope in wide interval. For example, Fig. 7 D illustrates and comprises that magnetic conductivity is that 10000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 1000 ohm in 100,650 or 800 ferritic three examples of NiZn. Fig. 7 C illustrates and comprises that magnetic conductivity is that 7000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 600 ohm in 100,650 and 800 ferritic three examples of NiZn. Fig. 7 B illustrates and comprises that magnetic conductivity is that 5000 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 600 ohm in 100,650 and 800 ferritic three examples of NiZn. Fig. 7 A illustrates and comprises that magnetic conductivity is that 2300 MnZn ferrite and magnetic conductivity are the each impedances in the frequency range of 1MHz to 10MHz respectively with at least about 800 ohm in 100,650 and 800 ferritic three examples of NiZn.
Just for the object of illustration, unrestriced object provides Fig. 5 A-7D. Because impedance is affected by the number of turn and weight ratio, thus for different illustrative embodiments, impedance variable, different. Therefore, the impedance different from the impedance shown in Fig. 5 A-7D can differently be constructed and have to other illustrative embodiments. For example, other illustrative embodiments (for example can have the circle of the MnZn ferrite of Different Weight ratio and NiZn ferrite, different magnetic conductivity, varying number or coil, along the MnZn ferrite core after combination and every side in NiZn ferrite core both sides greater or less than coil or the number of turn etc. of eight), greater or lesser endless core (for example, the total height after combination be greater than or less than 10 millimeters, external diameter be greater than or less than 25 millimeters, internal diameter and be greater than or less than 15 millimeters etc.) etc.
In addition, the illustrative methods relevant to common mode choke disclosed. In the exemplary embodiment, the method for manufacture common mode choke generally includes such as form independently MnZn ferrite ring-type core and NiZn ferrite ring-type core by sintering etc. MnZn ferrite ring-type core can be coated with such as epoxy coating etc. Coated MnZn endless core and NiZn endless core can, where necessary through processing, make each endless core have identical external diameter and identical internal diameter. MnZn ferrite and NiZn ferrite will have different shrinkage factors after burning, make two kinds of different instruments for MnZn ferrite and NiZn ferrite, thereby MnZn ferrite ring-type core is identical by essence with the size of NiZn ferrite ring-type core after burning. During processing, will correspondingly control pressing conditions and ignition temperature distribution map (firingprofile).
MnZn ferrite core and NiZn ferrite core can be combined. For example, NiZn ferrite core can be stacked on the top of MnZn ferrite core, or vice versa. MnZn ferrite ring-type core and NiZn ferrite ring-type core can be attached to one another by epoxy resin, adhesive tape etc.
MnZn ferrite ring-type core after can winding closing and NiZn ferrite ring-type core add or are wound around two windings (for example, via machine etc.). For example, MnZn ferrite ring-type core after these two windings can winding close and the contrary part of NiZn ferrite ring-type core relative to each other (for example arrange symmetrically, be wound around eight inferior), these contrary parts are utilized the openings that limit by the MnZn ferrite ring-type core after combination and NiZn ferrite ring-type core to be separated from each other and are spaced apart.
Between these two windings, distance piece can be set. Can be removed or the part of stripper wire for the dielectric coat on the line of winding. The exposed part of line or expose portion can be soldered, for example, comprise the tin/copper alloy (Sn99.3/Cu0.7) of the copper (Cu) of 99.3% tin (Sn) and 0.7%, comprise tin/silver/copper alloy (Sn96.5/Ag3.0/Cu0.5) of the copper (Cu) of 96.5% tin (Sn), 3% silver (Ag) and 0.5% etc.
Winding can be assembled into base. For example, winding, endless core and distance piece can be with respect to base settings, make the opening in the some parts inserted base of coil or winding. The some parts of winding can be connected to base. For example, can the some parts of winding be fixed to base by epoxy resin etc.
Exemplary common mode choke of the present disclosure can be suitable for being arranged on the surface on circuit board. DC-DC converter can comprise the common mode choke according to one or more aspect of the present disclosure.
Example embodiment is provided, and making the disclosure will be thorough, and scope fully will be conveyed to those skilled in the art. Set forth numerous details (such as, the example of concrete assembly, apparatus and method) so that the thorough understanding to embodiment of the present disclosure to be provided. It will be apparent to those skilled in the art, do not need to adopt detail, example embodiment can be by much multi-form enforcement, and do not have embodiment to be appreciated that restriction the scope of the present disclosure. In some example embodiment, there is no to describe in detail technique, the device architecture of knowing of knowing and the technology of knowing. In addition, it is the object for illustration that advantage and the improvement that available one or more illustrative embodiments of the present disclosure realizes is provided, do not limit the scope of the present disclosure, mention whole in advantage or above-mentioned advantage be not provided and still fall in the scope of the present disclosure because illustrative embodiments disclosed herein can provide above.
Concrete size disclosed herein, concrete material and/or concrete shape essence are examples, do not limit the scope of the present disclosure. The particular value of given parameters disclosed herein and specific range of values are not got rid of other value and the value scope that can be used in one or more example disclosed herein. In addition, be susceptible to, any two particular values of described design parameter can limit the end points (, any value that openly can be interpreted as disclosing between the first value and the second value of the first value of given parameters and the second value also can be used to given parameters) of the value scope that can be suitable for given parameters herein. For example, if illustrated in this article, parameter X has value A and illustration parameter X has value Z, is susceptible to, and parameter X can have the scope of the value from about A to about Z. Similarly, be susceptible to, open (no matter these scopes are nested, overlapping or different) of two or more scopes of the value of parameter comprises likely the combining of scope that can use the claimed value of the end points of open scope. For example, have the value of scope in 1-10 or 2-9 or 3-8 if illustrate parameter X herein, be also susceptible to, parameter X can have the value of other scope that comprises 1-9,1-8,1-3,1-2,2-10,2-8,2-3,3-10 and 3-9.
Term used herein is for the object of describing particular example embodiment, and is not intended for restriction. As used in this article, singulative " ", " one " and " this " can be intended to also comprise plural form, unless context clear instruction in addition. Term " comprises ", " comprising " and " having " comprising property, therefore indicate and have described feature, entirety, step, operation, element and/or assembly, exist or additional one or more further features, entirety, step, operation, element, assembly and/or its group but do not get rid of. Method step described herein, process and operation necessarily need it to carry out by the certain order of discussion or illustration by not being understood to, unless explicit recognition is the order of carrying out. It is also understood that, can adopt other or alternative step.
When element or layer be called as " " another element or layer " on ", " be engaged to ", " being connected to " or " being attached to " another element or when layer, it can, directly on another element or layer, engage, connect or be attached to another element or layer, or can have intermediary element or layer. By contrast, when element be called as " directly existing " another element or layer " on ", " being directly engaged to ", " being directly connected to " or " being directly attached to " another element or when layer, can not there is not intermediary element or layer. For other word of describing relation between these elements should make an explanation with similar type (for example, " and ... between " with " and directly exist ... between ", " with ... adjacent " with " and directly with ... adjacent " etc.). As used in this article, term "and/or" comprises one or more relevant any and whole combination of lising.
Term " approximately " is indicated and is calculated or measure the slightly certain inaccuracy of permissible value (approaching accurate value definitely in the time of the value of being applied to; Roughly or reasonably approach this value; Almost). If for certain reason, the inaccuracy causing because of " approximately " to be not have interpreted as that in the art it has this common implication in addition, and " approximately " used herein indicates at least form of distortion that can be derived from measurement or use the commonsense method of these parameters. For example, term " substantially ", " approximately " and " roughly " can be in this article for being illustrated in manufacturing tolerance. Or, for example, term used herein " approximately " refers to typical case's measurement of for example using when make concentrate or solution in real world time and manipulation process and the variation of the numerical quantities that occurs in the time modifying the amount of composition of the present utility model or reactant or be used, and this variation may be due to the missing error in these processes, owing to making the difference etc. of manufacture, source or purity of the composition that component or manner of execution adopt. Term " approximately " is also contained the different equilibrium conditions of the component causing due to Yin Teding original mixture and different amounts. Whether no matter modified by term " approximately ", claims all comprise the equivalent of quantity.
Although term " first ", " second ", " the 3rd " etc. can be in this article for describing various elements, assembly, region, layer and/or part, these elements, assembly, region, layer and/or part are not limited by these terms should. These terms can be only for distinguishing an element, assembly, region, layer or part and another region, layer or part. In the time using in this article, do not imply order or order such as the term of " first ", " second " and other numerical value term, indicate unless context is clear. Therefore,, in the case of not departing from the instruction of example embodiment, the first element discussed below, assembly, region, layer or part can be called as the second element, assembly, region, layer or part.
For convenience of description, can be in this article for facilitating the relation of describing as shown in FIG. one element or feature and other element or feature space relative terms such as " interior ", " outward ", " below ", " below ", " bottom ", " top ", " top ". The orientation of describing in accompanying drawing, space relative terms can be intended to also contain the different azimuth of device in the time using or operate. For example, if the device in accompanying drawing is reversed, the element that is described as be in other element or feature " bottom " or " below " will be oriented in other element or feature " top " subsequently. Therefore, exemplary term " bottom " can contain Zhe Liangge orientation, above and below. Device can be by other location (90-degree rotation or by other orientation) and respective explanations space used herein relative descriptors.
It is the object for illustration and description that the above description to embodiment is provided. This be not intended to be exclusiveness or restriction the disclosure. The feature of Individual components, expection or described use, specific implementations is not limited to this specific implementations generally, but, in applicable situation, be interchangeable and can be used for selected embodiment, even without specifically illustrating or describing. This also can change by many modes. These variations will not be regarded as a departure from the disclosure, and all such modifications form is intended to included within the scope of the present disclosure.
Claims (11)
1. a common mode choke, is characterized in that, this common mode choke comprises:
Core, described core comprises manganese-zinc ferrite part and nickel-zinc ferrite part, described core has the opening that runs through this core;
The first winding and the second winding, described the first winding and described the second winding are around the corresponding Part I of described coreWith Part II setting, described the first winding and described the second winding extend through the described opening of described core;
Distance piece, described distance piece is arranged between described the first winding and described the second winding, described core described in openIn mouthful;
Base, described base be connected to described the first winding and described the second winding and/or support described the first winding andDescribed the second winding.
2. common mode choke according to claim 1, is characterized in that,
Described manganese-zinc ferrite part comprises manganese-zinc ferrite endless core, and this manganese-zinc ferrite endless core has and runs through this manganeseThe first opening of Zn ferrite endless core;
Described nickel-zinc ferrite part comprises nickel-zinc ferrite endless core, and this nickel-zinc ferrite endless core has and runs through this nickelThe second opening of Zn ferrite endless core;
Described in described first opening of corresponding described manganese-zinc ferrite endless core and described nickel-zinc ferrite endless coreThe second opening is aligned with each other, to limit collaboratively the opening through described core.
3. common mode choke according to claim 2, is characterized in that, described nickel-zinc ferrite endless core connectionReceive described manganese-zinc ferrite endless core and/or supported by described manganese-zinc ferrite endless core.
4. common mode choke according to claim 2, is characterized in that, described manganese-zinc ferrite endless core toolThere are the internal diameter and the external diameter that equate respectively with internal diameter and the external diameter of described nickel-zinc ferrite endless core.
5. according to the common mode choke described in claim 1,2,3 or 4, it is characterized in that described the first windingWith described the second winding respectively along the described Part I of described core and outer surface and the inner surface of described Part IIArrange.
6. according to the common mode choke described in claim 1,2,3 or 4, it is characterized in that, described in described corePart I and described Part II and described the first winding and described the second winding are along the described opening of described coreOpposition side separate.
7. according to the common mode choke described in claim 1,2,3 or 4, it is characterized in that,
Described the first winding and described the second winding are around corresponding described Part I and the described Part II of described coreRelative to each other arrange symmetrically; And/or
The part of described the first winding and described the second winding extends through the opening in described base.
8. a core for common mode choke, is characterized in that, this core comprises:
Manganese-zinc ferrite endless core, described manganese-zinc ferrite endless core has and runs through first of this manganese-zinc ferrite endless coreOpening;
Nickel-zinc ferrite endless core, described nickel-zinc ferrite endless core has and runs through second of this nickel-zinc ferrite endless coreOpening;
Wherein, described first opening of corresponding described manganese-zinc ferrite endless core and described nickel-zinc ferrite endless coreDescribed the second opening is aligned with each other, to limit collaboratively the opening through described core.
9. the core of common mode choke according to claim 8, is characterized in that, described nickel-zinc ferrite ring-typeCore is connected to described manganese-zinc ferrite endless core and/or is supported by described manganese-zinc ferrite endless core.
10. the core of common mode choke according to claim 8, is characterized in that, described manganese-zinc ferrite ring-typeCore has the internal diameter and the external diameter that equate respectively with internal diameter and the external diameter of described nickel-zinc ferrite endless core.
11. 1 kinds of common mode chokes, is characterized in that, this common mode choke comprises: according to Claim 8 to 10Core described in middle any one, around the corresponding Part I of described core and Part II setting and extend through described coreThe first winding and second winding of described opening, and be arranged between described the first winding and described the second winding,Distance piece in the described opening of described core.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052429.1U CN205248027U (en) | 2015-12-16 | 2015-12-16 | Core of common mode choke coil and common mode choke coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052429.1U CN205248027U (en) | 2015-12-16 | 2015-12-16 | Core of common mode choke coil and common mode choke coil |
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| CN205248027U true CN205248027U (en) | 2016-05-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601431A (en) * | 2016-11-08 | 2017-04-26 | 合肥博微田村电气有限公司 | Common-mode and differential-mode inductor |
| CN106887299A (en) * | 2015-12-16 | 2017-06-23 | 莱尔德电子材料(深圳)有限公司 | Common mode choke including manganese-zinc ferrite and nickel-zinc ferrite |
| CN109564813A (en) * | 2016-06-16 | 2019-04-02 | 真空融化两合公司 | Induction structure element, the choke coil of current compensation and the method for manufacturing induction structure element |
| GB2599362A (en) * | 2020-09-24 | 2022-04-06 | Tdk Lambda Uk Ltd | Terminal connector |
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2015
- 2015-12-16 CN CN201521052429.1U patent/CN205248027U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887299A (en) * | 2015-12-16 | 2017-06-23 | 莱尔德电子材料(深圳)有限公司 | Common mode choke including manganese-zinc ferrite and nickel-zinc ferrite |
| CN109564813A (en) * | 2016-06-16 | 2019-04-02 | 真空融化两合公司 | Induction structure element, the choke coil of current compensation and the method for manufacturing induction structure element |
| CN106601431A (en) * | 2016-11-08 | 2017-04-26 | 合肥博微田村电气有限公司 | Common-mode and differential-mode inductor |
| GB2599362A (en) * | 2020-09-24 | 2022-04-06 | Tdk Lambda Uk Ltd | Terminal connector |
| US11764524B2 (en) | 2020-09-24 | 2023-09-19 | Tdk-Lambda Uk Limited | Terminal connector |
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Effective date of registration: 20200819 Address after: 528322 Guangdong Province, Foshan city Shunde District Leliu Town Fuan Industrial Zone Patentee after: STEWARD (FOSHAN) MAGNETICS Co.,Ltd. Address before: 518103 Luther King Industrial Park, Fu Fu Garden, Heping community, Fuyong Town, Shenzhen, Guangdong, Baoan District Patentee before: Laide electronic materials (Shenzhen) Co.,Ltd. |